National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Partly Cloudy

82°F

28°C

Humidity 55%
Wind Speed S 6 mph
Barometer 30.09 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 30 Jul 2:00 pm CDT
Extended Forecast for

Marseilles IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 85. South southeast wind around 5 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. South wind around 5 mph becoming calm after midnight.

    Low: 65 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after 3pm. Increasing clouds, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 80 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 66. East southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 66 °F

    Heavy Rain

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 74. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    High: 74 °F

    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 85. South southeast wind around 5 mph.
Tonight
Mostly cloudy, with a low around 65. South wind around 5 mph becoming calm after midnight.
Friday
Showers likely, mainly after 3pm. Increasing clouds, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 66. East southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Saturday
Showers and possibly a thunderstorm. High near 74. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Saturday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marseilles IL
 41.33°N 88.68°W
Last Update:
1:51 pm CDT Jul 30, 2026
Forecast Valid:
2pm CDT Jul 30, 2026-6pm CDT Aug 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation